02165 Union Pacific "Big Boy" Model Kit option-set-071 8 x ST-231 3rd Radius

8 x ST-231 3rd Radius Double Curves

as well as the tinted black rear side windows

Kit Instructions & Chimneys

7mm HSS drill bit

02165 Union Pacific "Big Boy" Model Kit option-set-071 8 x ST-231 3rd RadiusThe American Big Boys are among the longest and largest series steam locomotives ever built in the world. During the late 1930s, Union Pacific often used auxiliary locomotives to pull trains from Ogden, Utah to Wasatch over a steep pass. UP wanted to simplify this system and commissioned its own development department to design a new locomotive that could pull a 3,600 t train (up to a maximum of 4,200 t) up the steep pass. The 25 Big Boy locomotives